FR2528383A1 - LOCKING DEVICE FOR BLOCKING PARCELS IN A TRANSPORT AIRCRAFT FREIGHT CARRIER - Google Patents

Abstract

A LOCKING DEVICE FOR SECURING PARCELS IN THE CARGO BOTTOM OF TRANSPORT AIRCRAFT. B. LOCKING DEVICE FOR LOCKING PARCELS IN THE CARGO BOTTOM OF TRANSPORT AIRCRAFT CHARACTERIZED IN THAT THE LOCK 10 protruding from the casing 11 is held by a traction spring 18 acting with an eccentricity in relation to the pivot bearing AND THE OTHER END OF WHICH IS ARTICULATED ON A MANEUVER FLAP 19, LATCH 10 RETURNS TO A PIVOTING POSITION DETERMINED UNDER THE ACTION OF SPRING 18 AND THEN REMAINS IN A POSITION LOCATED BEYOND THE NEUTRAL POINT. C. THE INVENTION APPLIES TO SECURITIES FOR HANGING AND LOCKING PARCELS IN THE CARGO BOTTOM OF TRANSPORT AIRCRAFT.

Description

Locking device for blocking parcels

  in a cargo hold of transport aircraft ".

  The invention relates to a locking device for blocking packages in the cargo hold of transport aircraft, comprising a lock on which parcels can roll during transport in the cargo hold, this lock being mounted to pivot in a housing engaging in rails of the cargo floor

freight.

  Such locking devices, called

  YZ locks also have the function of maintaining parcels such as pallets and / or containers in the vertical direction and in the lateral direction in the position of

  storage in the cargo hold This function is

  by the bolts coming out of the crankcases and engaging on appropriate projections of the packages-keeping them

in their position.

  Locking devices engaged in the floor rails of the cargo hold may

  then be equipped with quick closures to be

  in the most varied positions inside the cargo compartment according to the size of the packages During the transport of the parcels, they must be able to roll on the locks projecting on the floor of the soda to

  in such a way that these locks can be self-

  rolled over during carriage in the cargo hold and lock in the opposite direction,

  that is, an unlocking operation is born

necessary for the rotation.

  The locks used up to now for this purpose have the disadvantage of requiring an electric control operation for their lowering or, if the lowering is manual, to pivot again upwards after a determined time interval and

  to hinder the transport of packages in the cargo hold.

  It is also sometimes desirable to unlock only certain locks in order to lower them and let the other locks in the stop position packages But known locks do not meet these conditions. The object of the invention is therefore to create a locking device of the type indicated in

  the preamble for locking and unlocking

  selective bolt lock in the crankcase without any action on

  other locking devices.

  To this end, the invention relates to a device

  characterized in that the lock projecting from the housing is held by a tension spring acting with an eccentricity with respect to the

  pivot bearing and whose other end is

  mounted on a maneuvering flap, and in that the maneuvering flap pivotally mounted in the casing attacks, by

  intermediary of paws the latch with an eccentric

  cited in relation to the pivot bearing as

  when the operating flap is depressed, the latch moves back to a pivoting position determined by the action of the spring and then remains in a position

located beyond the dead point.

  The arrangement according to the invention leads to a locking device whose lock can be rotated in one direction and which can, for example by foot pressure on the maneuver flap, be moved to the lowered position and This means that the locking device according to the invention acts at the same time as an automatic safety device for

the bearing.

  The locking device may then comprise, on the maneuvering flap, to ensure the connection with the tabs, pins positioned so as to be, when crossing the locking latch, above a line connecting the pivot bearing from the maneuvering shutter to the point of attack

  eccentric paws on the latch, and to be at-

  below when a downward pressure is exerted on the actuating flap This construction ensures that the lock can be rolled in one direction during the transport of packages, that is to say that the lock is lowered by the flap operated by the package and then returns to the upwardly rotated position after the package is passed over the lock. In addition, the lock is locked in the lowered position by a

  position beyond neutral, where a pressure

  downward pressure is exerted on the maneuvering flap.

  On the maneuver flap is further provided a flap portion over its pivot bearing and

  which, when pressed down, exceeds the posi-

  beyond the neutral position and releases the lock

for it to pivot upwards.

  According to an advantageous embodiment of the locking device, the tabs articulated on the dowels of the operating flap are provided with an oblong hole, these holes providing, when pressing the actuating flap to lower the lock, a short race to empty under the tension of the tension spring, to unlock the latch pivoted upwards

2 D 28383

  thus also locks and ensures the pivoted up position of the lock, so that the lock pivots into the housing for its lowering, when depressing the actuating flap, only after the course of the idle stroke. The invention will be better understood with regard to

  of the description below and the attached drawings

  showing an exemplary embodiment of the invention, drawings in which FIG. 1 represents a locking device whose lock is pivoted upwards and blocked FIG.

  lock with a latch pivoted upwards and

  blocked; FIG. 3 represents a device for

  lock with a lowered lock for the crossing

  4 shows a locking device with a latch remaining in the lowered position. According to FIGS. 1 to 4, there is shown a locking device whose lock 10 is

  mounted to pivot between two side walls of a car-

  The latch 10 has for this a piercing hole

  slope through which is engaged an axis 13 which

  at the same time pouring the side walls 12 Figures 1 to 4 show the locking device in longitudinal section, the side walls 12 which form the housing 11 are assembled at their ends by retaining bolts 14, 15 The latch 10 is made of hook form and constituted by an angled pivoting lever 16 having at the end of a lever arm a transverse branch 17 forming the hook This pivoting lever 16 comprises at the location of the elbow, the

  drilling for the axis 13 constituting the pivot bearing

  while a traction spring 18 is articulated

  on the second end of the lever

  In this way, the latch 10 acts on the latch 10 with an eccentricity with respect to the pivot bearing. A maneuvering flap 19 is also pivotally mounted by means of an axis 20 between the side walls 12 of the casing.

  maneuver 19 is coupled with the other end of the

  pulling piece 18, so that this flap pivots upward under the action of the spring force On the operating flap 19 are then provided two pins 21 on each of which is articulated a tab 22 having an oblong hole 23 to create a race to

  The other ends of these legs 22 are

  eccentrically abutted on the pivoting lever 16 of the

  lock 10, on which the traction spring 18 acts.

  When the latch 10 is in the upwardly pivoted state, two bosses 24 of the front face of the operating flap 19, split for the pivot lever 16 of the latch, are applied against the transverse branch

  17 and thus lock the latch in this position.

  In addition, on the pivoting lever 16 of the lock 10, there are stops 32 which, when the lock 10 is pivoted upwards, are applied to the tabs 22 for

  to limit the pivoting movement

  springs lock the operating flap 19 in this position and maintain it, the latch 10 in position, even in case of breakage of the latch 18 On the operating flap 19 is provided a flap portion 25 on the 20 axis serving as a pivot bearing, this part serving to release the latch lowered But, it is also possible to give up this portion of the flap and to pivot the latch 10 upwards by raising the actuating flap 19 or push the lock 10 This arrangement reduces the

  constructive length of the locking device.

  As can be seen from FIGS. 1 to 4, a locking device mounted in a support rail of the floor of a cargo hold can be rotated in the direction of arrow 26, FIG. That is, from left to right The maneuvering flap 19 is then pushed down by the package, as indicated by the arrow 27 Because of the presence of the oblong hole 23 in each of the tabs 22, the maneuvering flap 19 first performs a vacuum run which depends on the length of this hole

  oblong 23 in the legs 22 acting in pairs, that is

  that is to say on each side of the latch 10 By pivoting the maneuvering flap, the bosses 24 of the front face of the maneuvering flap are however lowered, so that the wide transverse branch 17 can, during the continuation of pivoting of the flap maneuver, engage in this maneuver flap split on its front face and

that the lock 10 can lower.

  Figure 2 shows the state of the

  lock at the end of the idle stroke Also shown in this figure is the transverse branch

  17 can pivot in the split maneuvering flap.

  As can be seen in FIG. 3, in the case of rollover by a package, the maneuvering flap is lowered to such an extent that it reaches the level of the floor-31 of the cargo hold indicated in broken lines in FIG. this position, however, the lock 10-is free and can rotate up again after the crossing by rolling This results from the pin 31 engaging in the oblong hole 23 of the tab 22 is above a line 28 which connects the pivot bearing (axis 20) of the operating flap 19 to the eccentric point of attack of the tab 22 on the latch 10 If the operating flap 19 is depressed further down, as indicated by the arrow 29 of Figure 4, the maneuvering flap pivots to such an extent that the pin 21 is, in the oblong hole 23 of the tab 22, below the line 28 In this position, the maneuvering flap is in a position beyond the dead point Indeed, the spring of traction 18 stops the maneuvering shutter

  19 by its pulling force The pursuit of the lowering

  The actuating flap 19 is prevented by the lugs 22 which, to reach this position, must have a notch 34. If the latch 10 is to be pivoted down again, the pressure 30 must be exerted as shown in FIG. on the rear flap portion 25, raise the maneuvering flap 19 or depress the latch

  As a result, the tension spring 18 is

  by the legs 22 which rotate a little more the lock 10, so that the maneuvering flap 19 can

  switch upwards from the position of over-

  stance and, above line 28, may

  be fully pivoted by the tension spring 18.

  The line 31 shown in broken line then indicates

  the level of the cargo hold of a transport aircraft.

  As shown in Figure 1 and Figure 2, a roller

  35 is provided in the lock 10, this roller allows

  both to move parcels transversally to the direc-

  longitudinal arrangement of the locking device and

guide them with the help of the roller.

Claims (1)

R E V E N D I C A T IO N S   1) Locking device for locking   parcels in the cargo hold of trans-   port, with a lock on which parcels can roll during transport in the cargo hold, this   being mounted to pivot in a crankcase   in the rails of the floor of the cargo hold, characterized in that the latch (10) projecting from the housing (11) is held by a tension spring (18) acting with an eccentricity with respect to the pivot bearing and the other end of which is articulated on a maneuvering flap (19), and in that the maneuvering flap (19) pivotally mounted in the casing (11) by means of tabs (22) latch (10) with such an eccentricity with respect to the pivot bearing that when the operating flap is depressed, the latch   (10) moves back to a position of pivoting   mined under the action of the spring (18) and then remains   in a position beyond the dead point.   20) Locking device according to claim 1, characterized in that the actuating flap (19) comprises, to ensure the connection with the legs (22), pins (21) positioned so as to be, when crossing the lock (10) by rolling above a line (28) connecting the pivoting bearing of the operating flap (19) to the off-centering point of the tabs (22) on the latch (10) and lying below when a downward pressure   is exerted on the maneuvering flap (19).   30) Locking device according to one   either of claims 1 and 2, characterized in that   that the operating flap (19) comprises a flap portion (25) above its pivot bearing, this portion protruding, at a downward pressure, the position beyond the dead point and releasing the   latch (10) to pivot upwardly.   ) Locking device according to one   any of claims 1 to 3, characterized in that   that the tabs (22) hinged on the pins (21) of the operating flap (19) have an oblong hole (23),   these holes provide, when pressing the shutter   neouvre (19) to lower the latch (10), a short vacuum crane under the tension of the tension spring for   unlock the latch (10) pivoted upwards.   50) Locking device according to one   any of claims 1 to 4, characterized in that   the latch (10) is hook-shaped and has a transverse branch (17) wide with respect to its pivoting lever, this branch resting on the end face of the operating flap (19) inclined in the pivoted position towards the top, said branch penetrating by pivoting, when the operating flap (19) is depressed, in a recess provided in this operating flap, after the empty race.   60) Locking device according to one   any of claims 1 to 5, characterized in that   the latch (10) comprises a roller (35) for guiding a   transport container when moving perpendicular   to the longitudinal axis of the locking device   ge. ) Locking device according to one   any of claims 1 to 6, characterized in that   a spring-loaded ball (33) is provided on the operating flap (19) to engage and secure the   latch (10) in the upwardly rotated position.   ) Locking device according to one   any of claims 1 to 7, characterized in that   that the pivoting lever (16) of the lock (10) has   stops (32) which, when pivoting upwards   rou (10), apply against the legs to limit the pivoting movement.   ) Locking device according to one   any of claims 1 to 8, characterized in that   that the tabs (22) limit the pivoting movement of the operating flap (19) by application against the   traction springs (18) during lowering.   ) Locking device according to one   any of claims 1 to 9, characterized in that   that the flap portion (25) provided for upward pivoting of the latch (10) is omitted to shorten the constructive length of the latch (10), pivoting   upwards being provided by raising the   work (19) and / or depression of the lock (10).